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/* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Stijn van Dongen
*
* This file is part of MCL. You can redistribute and/or modify MCL under the
* terms of the GNU General Public License; either version 2 of the License or
* (at your option) any later version. You should have received a copy of the
* GPL along with MCL, in the file COPYING.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include "alloc.h"
#include "compile.h"
#include "err.h"
#include "err.h"
static long mcx_alloc_maxchunksize = 1048576;
static long mcx_alloc_maxtimes = -1;
static mcxbool mcx_alloc_limit = FALSE;
void mcxAllocLimits
( long maxchunksize
, long maxtimes
)
{ if (maxchunksize > 0)
mcx_alloc_maxchunksize = maxchunksize
; if (maxtimes > 0)
mcx_alloc_maxtimes = maxtimes
; mcx_alloc_limit = TRUE;
; }
void* mcxRealloc
( void* object
, int new_size
, mcxOnFail ON_FAIL
)
{ void* mblock = NULL
; int status = 0
;
if (new_size < 0)
{ mcxErr("mcxRealloc PBD", "negative amount <%d> requested", new_size)
; status = 1
; }
else if (!new_size)
{ if (object)
mcxFree(object)
; }
else
{ if
( mcx_alloc_limit
&& (!mcx_alloc_maxtimes-- || new_size > mcx_alloc_maxchunksize)
)
mblock = NULL
; else
mblock = object
? realloc(object, new_size)
: malloc(new_size)
; }
if (new_size && (!mblock))
mcxMemDenied(stderr, "mcxRealloc", "byte", new_size)
, status = 1
;
if (status)
{ if (ON_FAIL == SLEEP_ON_FAIL)
{ mcxTell("mcxRealloc", "pid %d, entering sleep mode", (int) getpid())
; while(1)
sleep(1000)
; }
if (ON_FAIL == EXIT_ON_FAIL)
{ mcxTell("mcxRealloc", "going down")
; exit(1)
; }
}
return mblock
; }
void mcxNFree
( void* base
, int n_elem
, int elem_size
, void (*obRelease) (void *)
)
{ if (obRelease)
{ char *ob = base
; while (--n_elem >= 0)
{ obRelease(ob)
; ob += elem_size
; }
}
mcxFree(base)
; }
void* mcxNAlloc
( int n_elem
, int elem_size
, void* (*obInit) (void *)
, mcxOnFail ON_FAIL
)
{ return mcxNRealloc(NULL, n_elem, 0, elem_size, obInit, ON_FAIL)
; }
void* mcxNRealloc
( void* mem
, int n_elem
, int n_elem_prev
, int elem_size
, void* (*obInit) (void *)
, mcxOnFail ON_FAIL
)
{ char* ob
; mem = mcxRealloc(mem, n_elem * elem_size, ON_FAIL)
;
if (!mem)
return NULL
; if (obInit && n_elem > n_elem_prev)
{ ob = ((char*) mem) + (elem_size * n_elem_prev)
; while (--n_elem >= n_elem_prev)
{ obInit(ob)
; ob += elem_size
; }
}
return mem
; }
void mcxMemDenied
( FILE* channel
, const char* requestee
, const char* unittype
, int n
)
{ mcxErrf
( channel
, requestee
, "memory shortage: could not alloc [%d] instances of [%s]\n"
, n
, unittype
)
; }
void mcxFree
( void* object
)
{ if (object) free(object)
; }
void* mcxAlloc
( int size
, mcxOnFail ON_FAIL
)
{ return mcxRealloc(NULL, size, ON_FAIL)
; }
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